Every person I’ve spoken to in this trade can tell you horror stories ranging from plugged piping to failed boiler heat exchangers.

If you do a quick search of the phrase “required reading,” you’re likely to see the names of classic books such as “To Kill a Mockingbird,” “Of Mice and Men,” “Catcher in the Rye” and “Fahrenheit 451.” 

Hydronic heating and cooling systems that allow air or other gases to enter them do not function well.